Although measures of job experience are frequently-used screening devices in the selection of employees, personnel psychologists have devoted little attention to their usefulness. This article quantitatively summarizes data on the relation between job experience and job performance from a total sample of 16,058. The correlation between job experience and job performance was found to be moderated by two variables: length of experience and job complexity. The highest correlations were obtained in populations with low mean levels of job experience and for jobs that place low levels of cognitive demands on employees. Results appear to be consistent with the causal model of job performance proposed by Schmidt, Hunter, and Outerbridge (1986).